warptangent

blocks
  uint64_t -> blobdata (block_to_blob(blk))

block_timestamps
  uint64_t -> uint64_t

block_heights
  crypto::hash -> uint64_t

warptangent

rebase of blockchain branch to upstream master

Fixed 3 commits where there were CMake file conflicts.

Split the updates across 4 modified commits so that builds are still successful across the rewritten history.
Modifications were minor, only involving CMake files.
See the amended commit messages for details.

    build: add liblmdb to the cmake autodetection system